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        <div class="chatlog__header"><span class="chatlog__author" style="color:rgb(241,196,15)" title="hironytic" data-user-id="338302215078936576">hironytic</span> <a href="/channels/400483073743126558?category=archived&amp;channel=math&amp;message_id=406369381829050368"><span class="chatlog__timestamp" title="Friday, January 26, 2018 8:46 AM"></span></a><a href="#chatlog__message-container-406369295350628352">1/26/2018 8:46 AM</a></div>
        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">それはそう。型を集合とみなせば、継承は部分集合ですよね。</span></div>
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        <div class="chatlog__short-timestamp" title="Friday, January 26, 2018 8:46 AM">8:46 AM</div>
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        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">数学の話なのかSwiftの話なのかわからなくなってきた <img loading="lazy" class="chatlog__emoji " alt="😅" title="sweat_smile" src="https://cdn.jsdelivr.net/gh/twitter/twemoji@latest/assets/svg/1f605.svg"></span></div>
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